CN102582189A - Shrinking-proof polyethylene terephthalate (PET) laser transfer base film and method for preparing same - Google Patents
Shrinking-proof polyethylene terephthalate (PET) laser transfer base film and method for preparing same Download PDFInfo
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- CN102582189A CN102582189A CN2012100282225A CN201210028222A CN102582189A CN 102582189 A CN102582189 A CN 102582189A CN 2012100282225 A CN2012100282225 A CN 2012100282225A CN 201210028222 A CN201210028222 A CN 201210028222A CN 102582189 A CN102582189 A CN 102582189A
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Abstract
The invention discloses a shrinking-proof PET laser transfer base film and a method for preparing the same. The weight ratio of components of raw materials of layer A, layer B and layer C are as follows: layer A: 55%-75% of polyester used for films, 25%-45% of a caking inhibiter; layer B: 80%-85% of film polyester, 15%-20% of a thermal stability caking inhibiter; and layer C: 65%-80% of film polyester, 20%-35% of the caking inhibiter. The method for preparing the shrinking-proof PET laser transfer basement film comprises the steps of cutting materials into pieces and mixing the materials; performing fusion and extrusion; performing die head piece casting; drawing longitudinally; drawing transversely; performing traction and side shearing; winding; slitting and finishing products. Compared with conventional laser transfer base films, the shrinking-proof PET laser transfer base film has the advantages that the shrinking-proof performance is excellent, the thermal stability is good, the stamping effect is good, the transfer is complete, and the thickness is uniform. The shrinking-proof PET laser transfer base film can meet requirements of users for production of high-end positioning laser transfer base films and is applicable to manufacture of laser transfer aluminum plating packaging materials which have certain anti-counterfeiting functions.
Description
Technical field
The present invention relates to a kind of three-layer co-extruded biaxial tension PET basement membrane and preparation method thereof, relate in particular to radium-shine transfer basement membrane of a kind of anti-contraction PET and preparation method thereof.
Background technology
In recent years, there is very big demand the domestic market to the radium-shine transfer basement membrane of top grade.Usually the radium-shine transfer basement membrane of common PET, PP raw material production is decorated, decorate the commodity of pack after impression vapor deposition and radium-shine transfer, thereby realize antiforge function.The radium-shine transfer basement membrane that adopts the common PET raw material production to come out; Its production technology and equipment performance are had higher requirement, and the product quality of producing can not satisfy user's requirement fully, as produce the printed patterns alignment precision deviation requirement≤0.3mm of the laser transfer membrane that high-grade tobacco bale uses; And the most of percent thermal shrinkage of the PET laser transfer membrane of domestic production is generally between 0.1-0.5%; Cause product percent of pass on the low side, the laser transfer membrane surface can form some version seams, and this brings inconvenience not only can for the processing of downstream user subsequent production; And can cause the tobacco bale percent defective to rise; Waste a large amount of raw and auxiliary materials, cause production cost to increase, and then can have influence on the extensive use of PET laser transfer membrane product.
In order to overcome the deficiency that laser transfer membrane exists, produce the high-grade laser transfer membrane that can satisfy user's instructions for use, those skilled in the art have also done some research work:
Weifu Packing Material Co., Ltd., Puning is studied radiant vacuum aluminium-jetting transferring base membrane; Each layer formula and technology are improved; Melt modification theory through utilization PP (homo-polypropylene) and COPP (COPP) heat, utilize existing BOPP production line, add specific material (caking inhibiter, slipping agent etc.) at sandwich layer and top layer before the co-extrusion; It is simple to make the BOPP basement membrane of production both have technology; Radium-shine press pattern is clear, and the function of conveniently aluminizing can be transferred to laser pattern on the specific paperboard again at an easy rate; What its product each item performance indications met the GB/T12026-2000A class requires the product uniformity, and smooth surface is fine and smooth, and it is clear to process pictorial trademark, and glossiness is high, and antifalse effect is good etc.
The patent No. is that ZL201020213104.8 discloses a kind of located laser transfer membrane.The transfer membrane that this patent provides comprises PET surface layer, PET intermediate layer and the PET bottom that sets gradually; It also comprises primer layer and printed layers simultaneously, and said primer layer is arranged at the PET bottom surface, and said printed layers is arranged on the primer layer; Said printed layers is made up of color printing piece and position line; Said color printing piece has a plurality of, and a plurality of color printings block gap is provided with, the other position line that is provided with of each color printing piece.This located laser transfer membrane, polarization is good, and the cigarette case pattern deviation after the transfer printing is less, and aesthetic property is strong, can improve and beautify the visual effect of cigarette package, satisfies the demands of consumers.
The patent No. is the manufacturing process that ZL200910050145.1 discloses a kind of PET laser transfer membrane, and this Patent technology characteristic is that laser transfer coatings is coated on the PET basement membrane, prepares a kind of environmental protection type packing print laser anti-fake material.This patent preparation process is following: on the PET transfer basement membrane, once be coated with laser transfer coatings with anilox roll and form coating, pre-coating film is processed in oven dry; Pre-coating film is carried out laser molding, the interference fringe hot pressing on the radium-shine laser version is printed on the coating of pre-coating film and form Information Level, process moulding film; Moulding film is aluminized, on Information Level, form aluminium lamination, process the PET laser transfer membrane; Have easy mold pressing and function such as peel off because laser molding is transfer coated, need once be coated with, can enhance productivity greatly; Basement membrane was also recyclable after aluminizer shifted and peels off uses repeatedly repeatedly, can reduce cost greatly.
The patent No. is that ZL200410024336.8 provides a kind of holographic false proof polyester basement membrane; The holographic false proof basement membrane that this patent provides comprises two superficial layers and sandwich layer; Contain a certain proportion of crystalline polyester and polyester basement membrane side cut material component in the sandwich layer, one of them superficial layer is the holographic false proof surface layer, and another superficial layer is holographic false proof surface layer or common polyester for film surface layer; Include the non-crystalline polyester of 10%-100% and the additive carrier of 0-90% by weight percentage in the holographic false proof surface layer; Include the crystalline polyester of 50%-90% and the additive carrier of 10%-50% by weight percentage in the common polyester for film surface layer, described additive carrier is except that including crystalline polyester; Also include additive silica, kaolin, calcium phosphate or barium sulfate, wherein content of additive is 3000ppm by weight.This holographic false proof polyester basement membrane, can be on the holographic false proof surface layer direct mould pressing holographic anti-counterfeiting logo pattern, improved efficient, reduced production cost, expanded the application of anti-fake product.
The patent No. is that ZL201120013652.0 provides a kind of colored printing hologram pattern transfer membrane, and its structure includes base membrane layer, peel ply, carrier layer, position hologram case layer, adhesive-layer and stickup protective layer from the bottom to top successively; Have the colored printing ink layer on the described carrier layer of this patent, can laser hologram image be transferred on packaging material and the ornament, can strengthen its visual effect and effect, also can strengthen its antifalse effect simultaneously.
Summary of the invention
The present invention is directed to the problem in the background technology; Radium-shine transfer basement membrane of a kind of anti-contraction PET and preparation method thereof is provided; Purpose is: from influencing basement membrane thermal contraction principle, the PET composition of raw materials is improved, further reduce the percent thermal shrinkage of basement membrane; Improve the heat endurance of basement membrane, and make the radium-shine transfer basement membrane of preparation have better anti-contractive effect.
The technical scheme that the present invention adopts is:
The radium-shine transfer basement membrane of a kind of anti-contraction PET; Constitute by the A layer that becomes one through hot melt, co-extrusion, biaxial tension, B layer and C layer; Wherein the A layer is a superficial layer, and the B layer is a laminboard layer, and the C layer is a bottom; It is characterized in that: the material component weight proportion of each layer is: the A layer: polyester for film 55～75%, caking inhibiter 25～45%; B layer: polyester for film 80～85%, heat endurance caking inhibiter 15～20%; C layer: polyester for film 65～80%, caking inhibiter 20～35%.
The thickness of the radium-shine transfer basement membrane of said anti-contraction PET is between 15～20 μ m, and the thickness ratio of A layer, B layer and C layer is: 5～10: 80～90: 5～10.
The preparation method of the radium-shine transfer basement membrane of a kind of anti-contraction PET comprises the steps:
1, section, batch mixing:
With polyester for film section that contains antiplastering aid and the polyester for film section that contains the heat endurance caking inhibiter is raw material, through preparatory crystallization, drying;
2, fusion, extrude:
The component of A, B, each layer of C is put into respectively in each self-corresponding double screw extruder by above-mentioned percentage by weight, and the thermal treatment zone of main extruder and auxilliary extruder all is heated to 275～285 ℃, and raw materials melt is extruded;
3, die head casting sheet:
Rapid cooling curing becomes sheet to the melt that flows out from die head on the slab roller surface;
4, longitudinal stretching:
On longitudinal stretching machine, be drawn into basement membrane, draft temperature is 80～120 ℃, and multiplying power is 3.0～4.0: 1, and hot strength is 200～300MPa; Basement membrane through longitudinal stretching carries out thermal finalization on one group of chill roll surface, and setting temperature is 170～180 ℃, shaping time 1～2 second;
5, cross directional stretch:
Basement membrane gets into transverse stretching machine behind longitudinal stretching; Draft temperature is 80～120 ℃, and the horizontal multiplying power of drawing is 3.0～4.0: 1, and hot strength is 200～300MPa; The thickness of basement membrane is 3.5～5.3 μ m; Basement membrane after the stretching carries out thermal finalization, cooling through one group of chill roll surface, 170～180 ℃ of setting temperatures, shaping time 1～2 second;
6, traction is cut edge:
Horizontal basement membrane of pulling out mouthful gets into the Traction Station, and to the rest and reorganization of cutting edge of basement membrane edge, the fabric width of basement membrane is 8700mm to the edge device in the Traction Station, draws then to winder through edge-trimming cutter;
7, rolling:
Through winder with the basement membrane rolling; The rolling station is distributed in cuts the roller both sides, rolling at interval on the station of both sides;
8, cut:
Basement membrane draws to cutter from unwinding rack, guarantees the tension force and the flattening of basement membrane in the process, is cutting the specification that roller place basement membrane slitting one-tenth needs;
9, finished product:
With the finished product packing of rolling, the back warehouse-in of weighing.
The said polyester for film section that contains antiplastering aid is to carry out highly purified direct esterification, polycondensation through terephthalic acid (TPA) (PTA) and ethylene glycol (EG), adds nanoscale SiO in the esterification ending phase
2Ethylene glycol dispersion or nanoscale BaSO
4The ethylene glycol dispersion adopts direct dispersion method in-situ polymerization to obtain containing nanoscale SiO afterwards
2Caking inhibiter or nanoscale BaSO
4The polyester for film of caking inhibiter, then to its stretch, granulation, obtain containing the polyester for film section of caking inhibiter at last.
The said polyester for film section that contains the heat endurance antiplastering aid is to carry out highly purified direct esterification, polycondensation through terephthalic acid (TPA) (PTA) and ethylene glycol (EG), adds nanoscale SiO in the esterification ending phase
2/ TiO
2The ethylene glycol dispersion adopts direct dispersion method in-situ polymerization to obtain containing nanoscale SiO afterwards
2/ TiO
2The polyester for film of heat endurance caking inhibiter; To its stretching, granulation, obtain containing the polyester for film section of heat endurance caking inhibiter at last then.
Said polyester building-up process comprises esterification and polycondensation reaction, when reaction, adds functional additive, catalyst and the stabilizing agent that is fit to.
Said additive is caking inhibiter and stable caking inhibiter, and the average grain diameter of additive is between 100～180nm, and the addition of additive is 2500～3800ppm.Described additive needs to stir and grind through surface treatment, high speed centrifugation earlier, it is dispersed in the ethylene glycol, and then joins in the polyester synthetic system; Described additive needs to add dispersant in grinding dispersion process, and dispersant is sodium polyphosphate or potassium polyphosphate, and its addition is with respect to 0.1%～0.5% of the additive quality that is fit to.
Described catalyst is germanium, antimony, any compound of titanium, and its addition is with respect to 0.01～0.09% of polyester quality.
Described stabilizing agent is any in phosphoric acid, phosphorous acid, polyphosphoric acid, trimethyl phosphate, triphenyl phosphate, the triethyl phosphate, and its addition is with respect to 0.0003～0.030% of polyester quality.
Described caking inhibiter is titanium dioxide, silica, calcium carbonate, calcium phosphate, barium sulfate, kaolin or SiO
2/ TiO
2Composite granule or amino-compound with higher melt.
Beneficial effect of the present invention:
The radium-shine transfer basement membrane of anti-contraction PET of this prepared, thickness is 15～20 μ m, and fabric width reaches 8700mm, and heat resisting temperature reaches 120 ℃, and hot strength>=200MPa, percent thermal shrinkage≤3.5%, membrane surface coefficient of friction be lower than≤and 0.6.Compare with the radium-shine transfer basement membrane of conventional PET, have excellent anti-shrinkage and thermal stability preferably, the horizontal percent thermal shrinkage of basement membrane can accurately be controlled in-0.5～0% scope; The impression effect is clear; Shift fully uniform in thickness, stay in grade; Can satisfy the requirement that the user produces high-grade located laser transfer basement membrane, be applicable to make to have certain anti-fraud functional radium-shine transfer aluminum plated packaging material.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is a product structure sketch map of the present invention.
The specific embodiment
Below in conjunction with embodiment the present invention is done explanation further.
Embodiment one
1, section, batch mixing:
With the polyester for film section that contains 25% caking inhibiter and the polyester for film section that contains 20% caking inhibiter and the polyester for film section that contains 20% heat endurance caking inhibiter is raw material, through preparatory crystallization, drying;
2, fusion, extrude:
The component of A, B, each layer of C is put into respectively in each self-corresponding double screw extruder by above-mentioned percentage by weight, and the thermal treatment zone of main extruder and auxilliary extruder all is heated to 275～285 ℃, and raw materials melt is extruded; Wherein each layer component is: the A layer: polyester for film 75%; Caking inhibiter 25%; B layer: polyester for film 85%; Heat endurance caking inhibiter 15%; C layer: polyester for film 80%; Caking inhibiter 20%;
3, die head casting sheet:
Rapid cooling curing becomes sheet to the melt that flows out from die head on the slab roller surface;
4, longitudinal stretching:
On longitudinal stretching machine, be drawn into basement membrane, draft temperature is 80～120 ℃, and multiplying power is 3.0～4.0: 1, and hot strength is 200～300MPa; Basement membrane through longitudinal stretching carries out thermal finalization on one group of chill roll surface, and setting temperature is 170～180 ℃, shaping time 1～2 second;
5, cross directional stretch:
Basement membrane gets into transverse stretching machine behind longitudinal stretching; Draft temperature is 80～120 ℃, and the horizontal multiplying power of drawing is 3.0～4.0: 1, and hot strength is 200～300MPa; The thickness of basement membrane is 3.5～5.3 μ m; Basement membrane after the stretching carries out thermal finalization, cooling through one group of chill roll surface, 170～180 ℃ of setting temperatures, shaping time 1～2 second;
6, traction is cut edge:
Horizontal basement membrane of pulling out mouthful gets into the Traction Station, and to the rest and reorganization of cutting edge of basement membrane edge, the fabric width of basement membrane is 8700mm to the edge device in the Traction Station, draws then to winder through edge-trimming cutter;
7, rolling:
Through winder with the basement membrane rolling; The rolling station is distributed in cuts the roller both sides, rolling at interval on the station of both sides; The basement membrane thickness ratio that rolling is processed is: 5～10: 80～90: 5～10, and wherein, the thickness of A layer is 2 μ m, and the thickness of B layer is 16 μ m, and the thickness of C layer is 2 μ m;
8, cut:
Basement membrane draws to cutter from unwinding rack, guarantees the tension force and the flattening of basement membrane in the process, is cutting the specification that roller place basement membrane slitting one-tenth needs;
9, finished product:
With the finished product packing of rolling, the back warehouse-in of weighing.
The polyester for film section preparation technology who contains antiplastering aid: carry out highly purified direct esterification, polycondensation through terephthalic acid (TPA) (PTA) and ethylene glycol (EG), add nanoscale SiO in the esterification ending phase
2Ethylene glycol dispersion or nanoscale BaSO
4The ethylene glycol dispersion adopts direct dispersion method in-situ polymerization to obtain containing nanoscale SiO afterwards
2Caking inhibiter or nanoscale BaSO
4The polyester for film of caking inhibiter, then to its stretch, granulation, obtain containing the polyester for film section of caking inhibiter at last.
The polyester for film section preparation technology who contains the heat endurance caking inhibiter: carry out highly purified direct esterification, polycondensation through terephthalic acid (TPA) (PTA) and ethylene glycol (EG), add nanoscale SiO in the esterification ending phase
2/ TiO
2The ethylene glycol dispersion adopts direct dispersion method in-situ polymerization to obtain containing nanoscale SiO afterwards
2/ TiO
2The polyester for film of heat endurance caking inhibiter; To its stretching, granulation, obtain containing the polyester for film section of heat endurance caking inhibiter at last then.Said polyester building-up process comprises esterification and polycondensation reaction, when reaction, adds functional additive, catalyst and stabilizing agent.Said additive is caking inhibiter and stable caking inhibiter, and the average grain diameter of additive is between 100～180nm, and the addition of additive is 2500～3800ppm.Described additive needs to stir and grind through surface treatment, high speed centrifugation earlier, it is dispersed in the ethylene glycol, and then joins in the polyester synthetic system; Described additive needs to add dispersant in grinding dispersion process, and dispersant is sodium polyphosphate or potassium polyphosphate, and its addition is with respect to 0.1%～0.5% of additive quality.Described catalyst is germanium, antimony, any compound of titanium, and its addition is with respect to 0.01～0.09% of polyester quality.Described stabilizing agent is any in phosphoric acid, phosphorous acid, polyphosphoric acid, trimethyl phosphate, triphenyl phosphate, the triethyl phosphate, and its addition is with respect to 0.0003～0.030% of polyester quality.Described caking inhibiter is titanium dioxide, silica, calcium carbonate, calcium phosphate, barium sulfate, kaolin or SiO
2/ TiO
2Composite granule or amino-compound with higher melt.
Embodiment two
1, section, batch mixing:
Be to be raw material with the polyester for film section that contains 35% caking inhibiter and the polyester for film section that contains 30% caking inhibiter and the polyester for film section that contains 17% heat endurance caking inhibiter, through preparatory crystallization, drying,
2, fusion, extrude:
The component of A, B, each layer of C is put into respectively in each self-corresponding double screw extruder by above-mentioned percentage by weight, and the thermal treatment zone of main extruder and auxilliary extruder all is heated to 275～285 ℃, and raw materials melt is extruded; Wherein each layer component is: the A layer: polyester for film 55%; Caking inhibiter 45%; B layer: polyester for film 82%; Heat endurance caking inhibiter 20%; C layer: polyester for film 65%; Caking inhibiter 35%;
3, die head casting sheet:
Rapid cooling curing becomes sheet to the melt that flows out from die head on the slab roller surface;
4, longitudinal stretching:
On longitudinal stretching machine, be drawn into basement membrane, draft temperature is 80～120 ℃, and multiplying power is 3.0～4.0: 1, and hot strength is 200～300MPa; Basement membrane through longitudinal stretching carries out thermal finalization on one group of chill roll surface, and setting temperature is 170～180 ℃, shaping time 1～2 second;
5, cross directional stretch:
Basement membrane gets into transverse stretching machine behind longitudinal stretching; Draft temperature is 80～120 ℃, and the horizontal multiplying power of drawing is 3.0～4.0: 1, and hot strength is 200～300MPa; The thickness of basement membrane is 3.5～5.3 μ m; Basement membrane after the stretching carries out thermal finalization, cooling through one group of chill roll surface, 170～180 ℃ of setting temperatures, shaping time 1～2 second;
6, traction is cut edge:
Horizontal basement membrane of pulling out mouthful gets into the Traction Station, and to the rest and reorganization of cutting edge of basement membrane edge, the fabric width of basement membrane is 8700mm to the edge device in the Traction Station, draws then to winder through edge-trimming cutter;
7, rolling:
Through winder with the basement membrane rolling; The rolling station is distributed in cuts the roller both sides, rolling at interval on the station of both sides; The basement membrane thickness ratio is processed in rolling: 5～10: 80～90: 5～10, and wherein, the thickness of A layer is 1 μ m, and the thickness of B layer is 18 μ m, and the thickness of C layer is 1 μ m;
8, cut:
Basement membrane draws to cutter from unwinding rack, guarantees the tension force and the flattening of basement membrane in the process, is cutting the specification that roller place basement membrane slitting one-tenth needs;
9, finished product:
With the finished product packing of rolling, the back warehouse-in of weighing.
The polyester for film section that contains antiplastering aid is identical with embodiment one with the preparation technology of the polyester for film section that contains the heat endurance caking inhibiter, repeats no more.
Embodiment three
1, section, batch mixing:
Be to be raw material, through preparatory crystallization, drying with the polyester for film section that contains 45% caking inhibiter and the polyester for film section that contains 35% caking inhibiter and the polyester for film section that contains 15% heat endurance caking inhibiter;
2, fusion, extrude:
The component of A, B, each layer of C is put into respectively in each self-corresponding double screw extruder by above-mentioned percentage by weight, and the thermal treatment zone of main extruder and auxilliary extruder all is heated to 275～285 ℃, and raw materials melt is extruded; Wherein each layer component is: the A layer: polyester for film 55%; Caking inhibiter 45%; B layer: polyester for film 82%; Heat endurance caking inhibiter 20%; C layer: polyester for film 65%; Caking inhibiter 35%;
3, die head casting sheet:
Rapid cooling curing becomes sheet to the melt that flows out from die head on the slab roller surface;
4, longitudinal stretching:
On longitudinal stretching machine, be drawn into basement membrane, draft temperature is 80～120 ℃, and multiplying power is 3.0～4.0: 1, and hot strength is 200～300MPa; Basement membrane through longitudinal stretching carries out thermal finalization on one group of chill roll surface, and setting temperature is 170～180 ℃, shaping time 1～2 second;
5, cross directional stretch:
Basement membrane gets into transverse stretching machine behind longitudinal stretching; Draft temperature is 80～120 ℃, and the horizontal multiplying power of drawing is 3.0～4.0: 1, and hot strength is 200～300MPa; The thickness of basement membrane is 3.5～5.3 μ m; Basement membrane after the stretching carries out thermal finalization, cooling through one group of chill roll surface, 170～180 ℃ of setting temperatures, shaping time 1～2 second;
6, traction is cut edge:
Horizontal basement membrane of pulling out mouthful gets into the Traction Station, and to the rest and reorganization of cutting edge of basement membrane edge, the fabric width of basement membrane is 8700mm to the edge device in the Traction Station, draws then to winder through edge-trimming cutter;
7, rolling:
Through winder with the basement membrane rolling; The rolling station is distributed in cuts the roller both sides, rolling at interval on the station of both sides; The basement membrane thickness ratio is processed in rolling: 5～10: 80～90: 5～10, and wherein, the thickness of A layer is 1 μ m, and the thickness of B layer is 18 μ m, and the thickness of C layer is 1 μ m;
8, cut:
Basement membrane draws to cutter from unwinding rack, guarantees the tension force and the flattening of basement membrane in the process, is cutting the specification that roller place basement membrane slitting one-tenth needs;
9, finished product:
With the finished product packing of rolling, the back warehouse-in of weighing.
The polyester for film section that contains antiplastering aid is identical with embodiment one with the preparation technology of the polyester for film section that contains the heat endurance caking inhibiter, repeats no more.
Claims (10)
1. prevent shrinking the radium-shine transfer basement membrane of PET for one kind; Constitute by the A layer that becomes one through hot melt, co-extrusion, biaxial tension, B layer and C layer; Wherein the A layer is a superficial layer, and the B layer is a laminboard layer, and the C layer is a bottom; It is characterized in that: the material component weight proportion of each layer is: the A layer: polyester for film 55～75%, caking inhibiter 25～45%; B layer: polyester for film 80～85%, heat endurance caking inhibiter 15～20%; C layer: polyester for film 65～80%, caking inhibiter 20～35%.
2. the radium-shine transfer basement membrane of anti-contraction PET as claimed in claim 1 is characterized in that: the thickness of the radium-shine transfer basement membrane of said anti-contraction PET is between 15～20 μ m, and the thickness ratio of A layer, B layer and C layer is: 5～10: 80～90: 5～10.
3. prepare the method for the radium-shine transfer basement membrane of anti-contraction PET as claimed in claim 1, comprise the steps:
A, section, batch mixing:
With polyester for film section that contains antiplastering aid and the polyester for film section that contains the heat endurance caking inhibiter is raw material, through preparatory crystallization, drying;
B, fusion, extrude:
The component of A, B, each layer of C is put into respectively in each self-corresponding double screw extruder by above-mentioned percentage by weight, and the thermal treatment zone of main extruder and auxilliary extruder all is heated to 275～285 ℃, and raw materials melt is extruded;
C, die head casting sheet:
Rapid cooling curing becomes sheet to the melt that flows out from die head on the slab roller surface;
D, longitudinal stretching:
On longitudinal stretching machine, be drawn into basement membrane, draft temperature is 80～120 ℃, and multiplying power is 3.0～4.0: 1, and hot strength is 200～300MPa; Basement membrane through longitudinal stretching carries out thermal finalization on one group of chill roll surface, and setting temperature is 170～180 ℃, shaping time 1～2 second;
E, cross directional stretch:
Basement membrane gets into transverse stretching machine behind longitudinal stretching; Draft temperature is 80～120 ℃, and the horizontal multiplying power of drawing is 3.0～4.0: 1, and hot strength is 200～300MPa; The thickness of basement membrane is 3.5～5.3 μ m; Basement membrane after the stretching carries out thermal finalization, cooling through one group of chill roll surface, 170～180 ℃ of setting temperatures, shaping time 1～2 second;
F, traction are cut edge:
Horizontal basement membrane of pulling out mouthful gets into the Traction Station, and to the rest and reorganization of cutting edge of basement membrane edge, the fabric width of basement membrane is 8700mm to the edge device in the Traction Station, draws then to winder through edge-trimming cutter;
G, rolling:
Through winder with the basement membrane rolling; The rolling station is distributed in cuts the roller both sides, rolling at interval on the station of both sides;
H, cut:
Basement membrane draws to cutter from unwinding rack, guarantees the tension force and the flattening of basement membrane in the process, is cutting the specification that roller place basement membrane slitting one-tenth needs;
I, finished product:
With the finished product packing of rolling, the back warehouse-in of weighing.
4. the anti-method of shrinking the radium-shine transfer basement membrane of PET of preparation as claimed in claim 3; It is characterized in that: the preparation method of polyester for film section who contains antiplastering aid in the A step is for to carry out highly purified direct esterification, polycondensation through terephthalic acid (TPA) and ethylene glycol, at esterification ending phase adding nanoscale SiO
2Ethylene glycol dispersion or nanoscale BaSO
4The ethylene glycol dispersion adopts direct dispersion method in-situ polymerization to obtain containing nanoscale SiO afterwards
2Caking inhibiter or nanoscale BaSO
4The polyester for film of caking inhibiter, then to its stretch, granulation, obtain containing the polyester for film section of caking inhibiter at last.
5. the anti-method of shrinking the radium-shine transfer basement membrane of PET of preparation as claimed in claim 3; It is characterized in that: the preparation method that the said polyester for film that contains the heat endurance antiplastering aid is cut into slices adds nanoscale SiO for to carry out highly purified direct esterification, polycondensation through terephthalic acid (TPA) and ethylene glycol in the esterification ending phase
2/ TiO
2The ethylene glycol dispersion adopts direct dispersion method in-situ polymerization to obtain containing nanoscale SiO afterwards
2/ TiO
2The polyester for film of heat endurance caking inhibiter; To its stretching, granulation, obtain containing the polyester for film section of heat endurance caking inhibiter at last then.
6. like claim 4 or the anti-method of shrinking the radium-shine transfer basement membrane of PET of 5 described preparations, it is characterized in that: add functional additive, catalyst and stabilizing agent in said esterification and the polycondensation process.
7. the anti-method of shrinking the radium-shine transfer basement membrane of PET of preparation as claimed in claim 6; It is characterized in that: said additive is caking inhibiter and stable caking inhibiter; The average grain diameter of additive is between 100～180nm, and the addition of additive is 2500～3800ppm.
8. the anti-method of shrinking the radium-shine transfer basement membrane of PET of preparation as claimed in claim 6, it is characterized in that: described catalyst is germanium, antimony, any compound of titanium, and its addition is with respect to 0.01～0.09% of polyester quality.
9. the anti-method of shrinking the radium-shine transfer basement membrane of PET of preparation as claimed in claim 6; It is characterized in that: described stabilizing agent is any in phosphoric acid, phosphorous acid, polyphosphoric acid, trimethyl phosphate, triphenyl phosphate, the triethyl phosphate, and its addition is with respect to 0.0003～0.030% of polyester quality.
10. caking inhibiter as claimed in claim 7 is characterized in that: described caking inhibiter is titanium dioxide, silica, calcium carbonate, calcium phosphate, barium sulfate, kaolin or SiO
2/ TiO
2Composite granule or amino-compound with higher melt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210028222.5A CN102582189B (en) | 2012-02-09 | 2012-02-09 | Shrinking-proof polyethylene terephthalate (PET) laser transfer base film and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210028222.5A CN102582189B (en) | 2012-02-09 | 2012-02-09 | Shrinking-proof polyethylene terephthalate (PET) laser transfer base film and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102582189A true CN102582189A (en) | 2012-07-18 |
| CN102582189B CN102582189B (en) | 2014-02-12 |
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| CN105729787A (en) * | 2016-01-28 | 2016-07-06 | 海宁长昆包装有限公司 | Manufacturing process of laser anti-counterfeiting BOPP (Biaxially oriented Polypropylene) film |
| CN106626677A (en) * | 2016-09-18 | 2017-05-10 | 江苏兴业聚化有限公司 | PET transfer basement film and preparation method thereof |
| CN106832816A (en) * | 2017-02-08 | 2017-06-13 | 营口康辉石化有限公司 | A kind of cigarette bag transfer membrane and its filming technology |
| CN106832816B (en) * | 2017-02-08 | 2019-02-15 | 营口康辉石化有限公司 | A kind of cigarette packet transfer membrane and its filming technology |
| CN108983339A (en) * | 2018-08-07 | 2018-12-11 | 兴和盛（深圳）新材料有限公司 | A kind of novel fire resistant 3D lenticular lenses and preparation method thereof |
| CN112046110A (en) * | 2020-09-30 | 2020-12-08 | 徐梦飞 | Unidirectional perspective sunshade film and preparation method thereof |
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| CN117301590A (en) * | 2023-11-30 | 2023-12-29 | 河南银金达新材料股份有限公司 | Production process of regenerated environment-friendly polyester film and regenerated PETG heat-shrinkable film |
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